Steam-generator



(No Model.) 2 Sheets-S1ieet 1.

P. FITZGIBBONS & H. K. EASON.

" STEAM GENERATOR.

No. 485,183. Patented Nov. 1, 1892.

WITNESSES: INVE T083 [/1 '1' 4 I W ATTORNEY5 A UNITED STATES PATENT OFFIE.

PATRICK FITZGIBBONS AND HENRY K. EASON, OF OSlVEGO, NEW YORK.

STEAM-G EN ERATO R.

SPECIFICATION forming part of Letters Patent No. 485,183, dated November1, 1892.

Application filed June 1, 1892. Serial No. 435111 (NO model-l To allwhom it may concern:

Be it known that we, PATRICK FITZGIBBONS and HENRY K. EASON, of Oswego,in the county of Oswego, in the State of New York, have invented new anduseful Improvements in Steam Generators, of which the following, takenin connection with the accompanying drawings, is a full, clear, andexact description.

Our invention relates to improvements in steam-generators, and has forits object the product-ion of a simple, practical, and effective devicefor generating steam rapidly and efficiently.

To this end it consists, essentially,in an upright lower shell having atop wall above the combustion-box, a drum projecting above the top wallof the lower shell and connected thereto and formed with a centralchamber for the reception of the products of combustion, aheating-chamber above the top wall of the lower chamber, an upperwater-containing shell within the heating-chamber, supported upon thedrum or connection and connected thereto, upwardlyextending tubes passedthrough the top wall of the lower shell, and substantiallyhorizontally-extending tubes passed through the peripheral wall of thedrum and lengthwisely through the upper shell.

The invention furthermore consists in the detail construction andarrangement of the parts, all as hereinafter more particularlydescribed, and pointed out in the claims.

In describing this invention reference is had to the accompanyingdrawings, forming a part of this specification, in which like lettersindicate corresponding parts in all the views.

Figure 1 is a front elevation of our invention. Fig. 2 is a verticalsectional view taken on line 2 2, Fig. 1. Fig. 3 is a horizontal sectional view taken on line 3 3, Fig. 2, the form of the overlyingwater-containing shell and upper portion of the outer casing being shownby dotted lines; and Fig. 4 is a vertical sectional view taken on line 44, Fig. 2.

A represents the lower water-containing shell of our invention, whichmay be of any desirable form, size, and construction. As hereillustrated, this shell is circular or rounding in cross-section and itssides are formed outer walla above its lower edge a The lower.

water-containing shell A is formed with a top wall A, composed of a topplate or wall a", secured to the outer walla at a and a lower plate orwall a", secured at 0, to the inner wall a. This construction of lowerwatercontaining shell forms a hollow water-containing cavity A betweenthe walls a a a a and forms a combustion-chamber A beneath the top wallA and within the wall a. .Fuel is admitted to this combustion chamberthrough an opening A in the front of the walls a a, which is closed by adoor A A suitable grate B is mounted 11 p011 any desirable constructionof support 17 at the base of the chamber A Beneath the grate B is theash-box 0, provided with a door 0, hinged at c to the lower extremity ofthe wall a, previously described.

Above the wall A of the lower water-containing shell is aheating-chamber D,inclosed by the upper end of the wall a, which is hereshown as the outer shell or casing of our improved heater. The upperextremity of this wall a is provided with a suitable lining a and itwill be evident that, if desired, the entire heater may be inclosed in asecond outer casing of metal, brick, or other suitable ma. terial.

E is a connection or drum extending upwardly from the top wall A of thelower shell A and formed of less diameter than said said top wall. Aspreferably constructed, this drum or connection is formed of an outerwall 6 and an inner wall 6. The lower extremity of the outer wall 6 issecured at e to a flange a, upon the plate a of the wall A, and itsupper end is provided with a flange eisecured at e to the edge of acircular opening f in the base of the upper heating shell F, presentlydescribed. The lower end of the inner wall e is secured at c to a flangea upon the plate a of the wall A, and its up per end is secured at e toa top plate 0 within the opening f. The drum or connection E is thusformed with a central chamber E directly above the combustion-box forreceiving the products of combustion.

G is a series of upright tubes or lines arranged at the outside of thedrum E, extending through the top wall Aof the lower shell A forconducting the products of combustion from the chamber A into theheating-chamber D.

H represents a series of substantially-horizontal tubes extendingthrough the wall of the drum or connection E for conducting the productsof combustion from the chamber E above the combustion-chamber A into theheating-chamber D. These tubes H are preferably arranged midway betweenthe top Wall A and the base of the upper water-containing shell F.

In operation the products of combustion generated within the chamber Aimpinge against the upper extremity of the plate a of theWater-containing shell A and against the plate a of the top wall A ofsaid water-containing shell, imparting thereto a certain percentage oftheir heat for raising the temperature of the water within the chamber AA part of the products of combustion then passes upwardly through thetubes or flues G into the chamber D and in its progress further heatsthe water in the chamber A The re maining portion of the products ofcombustion passes into the chamber E and through the tubes or flues IIinto the chamber D,thus

imparting heat to the water within the drum or connection E. The upperwater-containing shell F, previously mentioned, is also preferablycylindrical in cross-section and is arranged in asubstantially-horizontal plane above the top Wall A of the lower shellA. As previously mentioned, the base of the shell F is secured to aflange 6 upon the outer wall of the connection or drum E, andconsequently this connection or drum both forms a support for theuppershell and connects the same to the lower shell for producing acirculation of Water from one to the other. As best seen at Fig. 5, theshell F is of greater length than the diameter of the drum or connectionE, and consequently its extremities project beyond said drum orconnection and above the flues G. The upper portion of the shell Fpreferably projects beyond the heating-chamberD; but the lower portionof said shell is substantially inclosed by said chamber, andconsequentlythe products of combustion discharged into the same throughthe tubes or flues G H surround the lower extremity of the shell F andthen pass to the rear end at of the chamber D between the rear wall f ofthe shell F and the adjacent portion of the outer wall or shell a.

I represents an outlet-chamber for theproducts of combustion, arrangedat the front extremity of the shell F, and '1 an outlet or draft pipeopening from said chamber.

J are flues or tubes extending in a substantially-horizontal planelengthwise through the shell F for conducting the products of combustionfrom the rear end 01 of the heatingchamber D to the outlet-chamber I,whence they escape by the pipe 2'.

K are dampers at the rear extremity of the heating-chamber D on oppositesides of the lower' portion of the upper water-containing shell F forregulating the passage of the products of combustion from the forwardextremity of the chamber D to its rear extremity d, and thus governingthe action of our generator.

L L are doors in the front of the outer wall a for permitting internalcleaning of our invention, and, if desired, similar doors may beprovided at the back portion of said wall.

I is a door in the front wall t" of the outlet-chamber I for permittingcleaning of the pipes or tubes J.

The operation of our invention will be readily perceived from theforegoing description and upon reference to" the drawings, and it willbe particularly noted that the path of the products of combustion isquite tortuous, that the heating-chamber D permits a thoroughconsumption of the heated gases, that the circulation between the lowerand upper water-containing shellsis positive and effective, and that theparts are simple in construction, easily assembled, and d urable andeffective in use and operation. It will be readily understood, however,that the detail construction and arrangement of the parts ofourgenerator may be considerably varied from that shown and describedwithout departing from the spirit of ourinvention. Hence We do notherein limit ourselves to such detail construction and arrangement.

Having thus fully described our invention, Whatwe claim as new, anddesire to secure by Letters Patent, is

1. In a steam-generator, the combination-of an upright water-containingshell formedwith a contracted hollow drum, flues extending upwardlythrough said shell, and a horizontal water-containing shell supportedupon and connected to said drum with its extremities directly above saidflues, substantially as and for the purpose specified.

2. In a steam-generator, the combination of an upright water-containingshell having a contracted upwardly-extending drum, a horizontalwater-containin g shell supported above the lower shell upon saiddrumand connected thereto, and flues extending lengthwisely through thelatter shell, substantially as and for the purpose specified.

3. In asteam-generator, the combination of an upright hollowwater-containing shell, a horizontal water-containing shell above theformer, an upright connection or drum between said shells, formed withan inner chamber for receiving the products of combustion, andfluesextending through the wall of said upright connection or drum,substantially as and for the purpose set forth.

4. In a steam-generator, the combination of a water-containing shellhaving a top wall, tubes extending through said wall, a secondwater-containing shell above the top wall of the former shell, aconnection between said IIO shells, and fines extending lengthwiselythrough the upper shell,substantially as and for the purpose described.

5. In a steam generator, the combination of an upright water-containingshell having a top wall, tubes extending through said top wall, and asecond substantially-horizontal watercontaining shell mounted above saidtop wall and having its extremities projecting above said tubes,substantially as specified.

6. In a steam-generator, the combination of an upright water-containingshell having a top wall, tubes extending through said top wall, a secondsubstantially-horizontal watercontaining shell mounted above said topwall and having its extremities projecting above said tubes, and tubesextending through the latter shell in substantially-horizontal planes,substantially as described.

7. In a steam-generator, the combination of an upright water-containingshell having a top wall, tubes extending through said top wall, a secondsubstantially-horizontal Watercontaining shell mounted above said topwall and having its extremities projecting above said tubes, tubesextending through the latter shell, a connection between the top Wall ofthe lower shell and the upper shell, and tubes extending through thewall of said connection, substantially as set forth.

8. In a steam-generator, the combination of an upright water-containingshell having a top wall, a water connection or drum extending above thetop wall and formed with an inner chamber for receiving the products ofcombustion and provided with a top wall, and a second chamber supportedabove the former upon said connection and formed of greater diameterthan said connection, substantially as described.

9. In a steam-generator, the combination of a lower water-containingshell formed with a top wall, a heating-chamber above the top wall,tubes extending through said top wall for conveying the products ofcombustion to the heating-chamber, an upper water-containing shellmounted above the former within said heating-chamber, an outlet-chamberat one end of the latter water-containing shell, and fines extendingthrough the latter watercontaining shell for conveying the products ofcombustion from the latter heating-chamber to the outlet-chamber,substantially as specified.

10. In a steam-generator, the combination of a lower water-containingshell formed with a top wall, a heating-chamber above the top wall,tubes extending through the said wall for conveying the products ofcombustion to the heating-chamber, an upper water-containing shellmounted above the former within said heating-chamber, an outlet-chamberat one end of the latter water-containing shell, fines extending throughthe latter water-containing shell for conveying the products ofcombustion from the latter heating-chamber to the outlet-chamber, aconnection between said water-containing shells for producing acirculation from one to the other, formed with an internal chamber forthe products of combustion and provided with a top wall, and finesextending through said connection beneath its top wall, substantially asand for the purpose specified.

In testimony whereof we have hereunto signed our names, in the presenceof two attesting witnesses, at Syracuse,in the county of Onondaga, inthe State of New York, this 8th day of February, 1892.

PATRICK FITZGIBBONS. HENRY K. EASON. Witnesses: CLARK H. NORTON, E. H.WEIsBURG.

